Module creation basics in PowerShell - Mini Project: Build & Apply

Module creation basics

📖 Scenario: You are organizing your PowerShell scripts into a reusable module. This helps you keep your code neat and share functions easily.

🎯 Goal: Create a simple PowerShell module with one function, then import and use it.

📋 What You'll Learn

Create a PowerShell script file with a function

Save the script as a module file (.psm1)

Import the module in a PowerShell session

Call the function from the module and display its output

💡 Why This Matters

🌍 Real World

PowerShell modules help organize scripts into reusable packages. This is useful for system administrators who automate tasks across many computers.

💼 Career

Knowing how to create and use PowerShell modules is important for IT professionals managing Windows environments and automating workflows.

1

Create a function in a PowerShell script

Create a function called Get-Greeting that returns the string "Hello, PowerShell!". Write this function inside a script file named Greeting.ps1.

PowerShell

# Write the function Get-Greeting that returns "Hello, PowerShell!"
# Your code here

Need a hint?

Use the function keyword followed by the function name and curly braces. Inside, use return to send back the greeting string.

2

Save the function as a module file

Save the function Get-Greeting inside a file named Greeting.psm1 to create a PowerShell module.

PowerShell

function Get-Greeting {
    return "Hello, PowerShell!"
}
# Save this code in Greeting.psm1 file

Need a hint?

Rename the script file from .ps1 to .psm1 to make it a module file.

3

Import the module in PowerShell

Write the command to import the module Greeting.psm1 using Import-Module.

PowerShell

function Get-Greeting {
    return "Hello, PowerShell!"
}

# Import the Greeting module below
# Your code here

Need a hint?

Use Import-Module followed by the relative path to the module file.

4

Call the function from the module and display output

Call the function Get-Greeting and use Write-Output to display its returned string.

PowerShell

function Get-Greeting {
    return "Hello, PowerShell!"
}

Import-Module .\Greeting.psm1

# Call Get-Greeting and display the result
# Your code here

Need a hint?

Use Write-Output with the function call in parentheses to show the greeting.